src/usermanager.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "xline.h"
  16 #include "bancache.h"
  17
  18 /* add a client connection to the sockets list */
  19 void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
  20 {
  21         /* NOTE: Calling this one parameter constructor for User automatically
  22          * allocates a new UUID and places it in the hash_map.
  23          */
  24         LocalUser* New = NULL;
  25         try
  26         {
  27                 New = new LocalUser(socket, client, server);
  28         }
  29         catch (...)
  30         {
  31                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkies have been unleashed.");
  32                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!");
  33                 return;
  34         }
  35         UserIOHandler* eh = &New->eh;
  36
  37         /* Give each of the modules an attempt to hook the user for I/O */
  38         FOREACH_MOD(I_OnHookIO, OnHookIO(eh, via));
  39
  40         if (eh->GetIOHook())
  41         {
  42                 try
  43                 {
  44                         eh->GetIOHook()->OnStreamSocketAccept(eh, client, server);
  45                 }
  46                 catch (CoreException& modexcept)
  47                 {
  48                         ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  49                 }
  50         }
  51
  52         ServerInstance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket);
  53
  54         this->unregistered_count++;
  55
  56         /* The users default nick is their UUID */
  57         New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
  58         (*(this->clientlist))[New->nick] = New;
  59
  60         New->ident.assign("unknown");
  61
  62         New->registered = REG_NONE;
  63         New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
  64         New->lastping = 1;
  65
  66         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
  67         New->dhost.assign(New->GetIPString(), 0, 64);
  68         New->host.assign(New->GetIPString(), 0, 64);
  69
  70         ServerInstance->Users->AddLocalClone(New);
  71         ServerInstance->Users->AddGlobalClone(New);
  72
  73         this->local_users.push_back(New);
  74
  75         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  76         {
  77                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  78                 this->QuitUser(New,"No more connections allowed");
  79                 return;
  80         }
  81
  82         FOREACH_MOD(I_OnUserInit,OnUserInit(New));
  83
  84         /*
  85          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  86          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  87          */
  88         New->SetClass();
  89
  90         /*
  91          * Check connect class settings and initialise settings into User.
  92          * This will be done again after DNS resolution. -- w00t
  93          */
  94         New->CheckClass();
  95
  96         /*
  97          * even with bancache, we still have to keep User::exempt current.
  98          * besides that, if we get a positive bancache hit, we still won't fuck
  99          * them over if they are exempt. -- w00t
 100          */
 101         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 102
 103         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 104         {
 105                 if (!b->Type.empty() && !New->exempt)
 106                 {
 107                         /* user banned */
 108                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 109                         if (!ServerInstance->Config->MoronBanner.empty())
 110                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str());
 111                         this->QuitUser(New, b->Reason);
 112                         return;
 113                 }
 114                 else
 115                 {
 116                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 117                 }
 118         }
 119         else
 120         {
 121                 if (!New->exempt)
 122                 {
 123                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 124
 125                         if (r)
 126                         {
 127                                 r->Apply(New);
 128                                 return;
 129                         }
 130                 }
 131         }
 132
 133         if (!ServerInstance->SE->AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 134         {
 135                 ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 136                 this->QuitUser(New, "Internal error handling connection");
 137         }
 138
 139         /* NOTE: even if dns lookups are *off*, we still need to display this.
 140          * BOPM and other stuff requires it.
 141          */
 142         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 143
 144         if (ServerInstance->Config->NoUserDns)
 145         {
 146                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 147                 New->dns_done = true;
 148         }
 149         else
 150         {
 151                 New->StartDNSLookup();
 152         }
 153 }
 154
 155 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 156 {
 157         if (user->quitting)
 158         {
 159                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 160                 return;
 161         }
 162
 163         if (IS_SERVER(user))
 164         {
 165                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a fake user (%s)", user->nick.c_str());
 166                 return;
 167         }
 168
 169         user->quitting = true;
 170
 171         ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 172         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 173
 174         std::string reason;
 175         std::string oper_reason;
 176         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 177         if (operreason && *operreason)
 178                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 179         else
 180                 oper_reason = quitreason;
 181
 182         ServerInstance->GlobalCulls.AddItem(user);
 183
 184         if (user->registered == REG_ALL)
 185         {
 186                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 187                 user->WriteCommonQuit(reason, oper_reason);
 188         }
 189
 190         if (user->registered != REG_ALL)
 191                 if (ServerInstance->Users->unregistered_count)
 192                         ServerInstance->Users->unregistered_count--;
 193
 194         if (IS_LOCAL(user))
 195         {
 196                 LocalUser* lu = IS_LOCAL(user);
 197                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(lu));
 198                 UserIOHandler* eh = &lu->eh;
 199                 eh->DoWrite();
 200                 if (eh->GetIOHook())
 201                 {
 202                         try
 203                         {
 204                                 eh->GetIOHook()->OnStreamSocketClose(eh);
 205                         }
 206                         catch (CoreException& modexcept)
 207                         {
 208                                 ServerInstance->Logs->Log("USERS",DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 209                         }
 210                 }
 211
 212                 ServerInstance->SE->DelFd(eh);
 213                 eh->Close();
 214         }
 215
 216         /*
 217          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 218          * if they were an oper with +sn +qQ.
 219          */
 220         if (user->registered == REG_ALL)
 221         {
 222                 if (IS_LOCAL(user))
 223                 {
 224                         if (!user->quietquit)
 225                         {
 226                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s] (%s)",
 227                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 228                         }
 229                 }
 230                 else
 231                 {
 232                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 233                         {
 234                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s] (%s)",
 235                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 236                         }
 237                 }
 238                 user->AddToWhoWas();
 239         }
 240
 241         user_hash::iterator iter = this->clientlist->find(user->nick);
 242
 243         if (iter != this->clientlist->end())
 244                 this->clientlist->erase(iter);
 245         else
 246                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 247
 248         ServerInstance->Users->uuidlist->erase(user->uuid);
 249 }
 250
 251
 252 void UserManager::AddLocalClone(User *user)
 253 {
 254         clonemap::iterator x;
 255         x = local_clones.find(user->GetCIDRMask());
 256         if (x != local_clones.end())
 257                 x->second++;
 258         else
 259                 local_clones[user->GetCIDRMask()] = 1;
 260 }
 261
 262 void UserManager::AddGlobalClone(User *user)
 263 {
 264         clonemap::iterator x;
 265
 266         x = global_clones.find(user->GetCIDRMask());
 267         if (x != global_clones.end())
 268                 x->second++;
 269         else
 270                 global_clones[user->GetCIDRMask()] = 1;
 271 }
 272
 273 void UserManager::RemoveCloneCounts(User *user)
 274 {
 275         if (IS_LOCAL(user))
 276         {
 277                 clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 278                 if (x != local_clones.end())
 279                 {
 280                         x->second--;
 281                         if (!x->second)
 282                         {
 283                                 local_clones.erase(x);
 284                         }
 285                 }
 286         }
 287
 288         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 289         if (y != global_clones.end())
 290         {
 291                 y->second--;
 292                 if (!y->second)
 293                 {
 294                         global_clones.erase(y);
 295                 }
 296         }
 297 }
 298
 299 unsigned long UserManager::GlobalCloneCount(User *user)
 300 {
 301         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 302         if (x != global_clones.end())
 303                 return x->second;
 304         else
 305                 return 0;
 306 }
 307
 308 unsigned long UserManager::LocalCloneCount(User *user)
 309 {
 310         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 311         if (x != local_clones.end())
 312                 return x->second;
 313         else
 314                 return 0;
 315 }
 316
 317 /* this function counts all users connected, wether they are registered or NOT. */
 318 unsigned int UserManager::UserCount()
 319 {
 320         /*
 321          * XXX: Todo:
 322          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 323          *      -- w00t
 324          */
 325         return this->clientlist->size();
 326 }
 327
 328 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 329 unsigned int UserManager::RegisteredUserCount()
 330 {
 331         return this->clientlist->size() - this->UnregisteredUserCount();
 332 }
 333
 334 /* return how many users are opered */
 335 unsigned int UserManager::OperCount()
 336 {
 337         return this->all_opers.size();
 338 }
 339
 340 /* return how many users are unregistered */
 341 unsigned int UserManager::UnregisteredUserCount()
 342 {
 343         return this->unregistered_count;
 344 }
 345
 346 /* return how many local registered users there are */
 347 unsigned int UserManager::LocalUserCount()
 348 {
 349         /* Doesnt count unregistered clients */
 350         return (this->local_users.size() - this->UnregisteredUserCount());
 351 }
 352
 353 void UserManager::ServerNoticeAll(const char* text, ...)
 354 {
 355         if (!text)
 356                 return;
 357
 358         char textbuffer[MAXBUF];
 359         char formatbuffer[MAXBUF];
 360         va_list argsPtr;
 361         va_start (argsPtr, text);
 362         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 363         va_end(argsPtr);
 364
 365         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 366
 367         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 368         {
 369                 User* t = *i;
 370                 t->WriteServ(std::string(formatbuffer));
 371         }
 372 }
 373
 374 void UserManager::ServerPrivmsgAll(const char* text, ...)
 375 {
 376         if (!text)
 377                 return;
 378
 379         char textbuffer[MAXBUF];
 380         char formatbuffer[MAXBUF];
 381         va_list argsPtr;
 382         va_start (argsPtr, text);
 383         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 384         va_end(argsPtr);
 385
 386         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 387
 388         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 389         {
 390                 User* t = *i;
 391                 t->WriteServ(std::string(formatbuffer));
 392         }
 393 }
 394
 395
 396 /* return how many users have a given mode e.g. 'a' */
 397 int UserManager::ModeCount(const char mode)
 398 {
 399         int c = 0;
 400         for(user_hash::iterator i = clientlist->begin(); i != clientlist->end(); ++i)
 401         {
 402                 User* u = i->second;
 403                 if (u->modes[mode-65])
 404                         c++;
 405         }
 406         return c;
 407 }